No one can be, at the same time, a sincere Catholic and a true Socialist.

Furthermore, in this one Church of Christ no man can be or remain who does not accept, recognize and obey the authority and supremacy of Peter and his legitimate successors.

No vicarious charity can substitute for justice which is due as an obligation and is wrongfully denied.

Communism teaches and seeks two objectives: unrelenting class warfare and the complete eradication of private ownership.

This [the opening of the Vatican City radio station built by Marconi earlier in 1931] was a new demonstration of the harmony between science and religion that each fresh conquest of science ever more luminously confirms, so that one may say that those who speak of the incompatibility of science and religion either make science say that which it never said or make religion say that which it never taught.

It violates right order whenever capital so employs the working or wage-earning classes as to divert business and economic activity entirely to its own arbitrary will and advantage, without any regard to the human dignity of the workers, the social character of economic life, social justice, and the common good.

It is not enough to be a member of the Church of Christ, one needs to be a living member, in spirit and in truth, i.e., living in the state of grace and in the presence of God, either in innocence or in sincere repentance.